520163026531 has 4 divisors (see below), whose sum is σ = 529977423312. Its totient is φ = 510348629752.

The previous prime is 520163026529. The next prime is 520163026541. The reversal of 520163026531 is 135620361025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520163026531 - 2¹ = 520163026529 is a prime.

It is a super-2 number, since 2×520163026531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520163026501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4907198311 + ... + 4907198416.

It is an arithmetic number, because the mean of its divisors is an integer number (132494355828).

Almost surely, 2^520163026531 is an apocalyptic number.

520163026531 is a deficient number, since it is larger than the sum of its proper divisors (9814396781).

520163026531 is an equidigital number, since it uses as much as digits as its factorization.

520163026531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9814396780.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 520163026531 its reverse (135620361025), we get a palindrome (655783387556).

The spelling of 520163026531 in words is "five hundred twenty billion, one hundred sixty-three million, twenty-six thousand, five hundred thirty-one".